Drilling simulation experiment device and experiment method

Abstract

The invention discloses a simulation drilling experiment device and an experiment method, and relates to the technical field of drilling exploration, the simulation drilling experiment device comprises a support module, a containing module, a heating module, a pressure module, a detection module and a simulation module, an experiment cavity of the containing module is used for setting a rock sample; the pressure module can apply pressure to the rock sample; the output end of the simulation module can move in the vertical direction and can also rotate around a vertical axis and drive a drilling tool to rotate. The heating module comprises an oil liquid pipeline, a power source and a heating assembly, the heating assembly is connected with the oil liquid pipeline and can heat oil liquid in the oil liquid pipeline, the power source can suck the oil liquid in the experiment cavity from the oil suction port, and the oil liquid flows through the oil liquid pipeline and then is discharged to the experiment cavity from the oil conveying port; the detection module can detect the stress and strain of the rock sample. According to the drilling simulation experiment device and the experiment method, the authenticity of simulation data can be improved, and the rock sample can be uniformly heated.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling exploration, and particularly to a simulated drilling experiment device and an experimental method. Background Art

[0002] Before deep-hole drilling, in order to ensure the efficiency, safety, and economy of the drilling process, it is necessary to deeply understand various characteristics of rocks under the conditions of deep holes, high temperature, and high in-situ stress, as well as the stress and strain conditions of rocks during the drilling process. Traditional rock drilling simulation experimental equipment usually has difficulty in truly simulating high-temperature and high-pressure environments while realizing the drilling of rock samples and the measurement of stress and strain. There are deviations between the simulated data obtained after simulated drilling and the actual situation. Although some simulation experimental equipment can simply control the environment during stress and strain measurement, the temperature control of many equipment is not perfect, and it is impossible to ensure uniform heating of rock samples. Therefore, there is an urgent need for a simulated drilling experiment device and an experimental method that can improve the authenticity of simulated data and enable uniform heating of rock samples. Summary of the Invention

[0003] The purpose of the present invention is to provide a simulated drilling experiment device and an experimental method to solve the above problems existing in the prior art, which can improve the authenticity of simulated data and enable uniform heating of rock samples.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The present invention provides a simulated drilling experiment device, including: a support module, a containment module, a heating module, a pressure module, a detection module, and a simulation module. The containment module, the pressure module, and the simulation module are all connected to the support module; the containment module has an experimental cavity with an open top, and the experimental cavity is used to set a rock sample; the pressure module can apply pressure to the rock sample in the experimental cavity; the simulation module is located above the experimental cavity, the simulation module has an output end, the output end can move in the vertical direction, the output end is used to connect a drill tool, and the output end can also rotate around a vertical axis and drive the drill tool to rotate; the heating module includes: an oil pipeline, a power source, and a heating component. The oil pipeline has an oil suction port and an oil delivery port, both the oil suction port and the oil delivery port are communicated with the experimental cavity, the heating component is connected to the oil pipeline and can heat the oil in the oil pipeline, and the power source can suck the oil in the experimental cavity from the oil suction port and make the oil flow through the oil pipeline and then be discharged from the oil delivery port to the experimental cavity; the detection module can detect the magnitudes of stress and strain of the rock sample.

[0006] In some embodiments, the power source is an oil pump, the heating component is a resistance wire, the oil pipeline includes a suction section, a heating section, and a discharge section. One end of the suction section forms the suction port, and the other end is connected and communicated with the inlet of the oil pump. One end of the heating section is connected and communicated with the outlet of the oil pump, and the other end is connected and communicated with one end of the discharge section. The other end of the discharge section forms the oil delivery port, and the resistance wire is wound around the heating section.

[0007] In some embodiments, a temperature sensor is provided on the oil pipeline, and the temperature sensor can detect the temperature in the oil inlet pipeline.

[0008] In some embodiments, the accommodation module includes: a fuel tank and a holder. The top of the fuel tank has an opening, and the space inside the fuel tank forms the experimental chamber. The holder is arranged inside the fuel tank, and the holder can fix the rock sample.

[0009] In some embodiments, the pressure module includes a horizontal pressure component and a vertical pressure component fixedly connected to the support module. The horizontal pressure component has two horizontally opposed pressure ends. Oppositely arranged first through-hole and second through-hole are provided on the side wall of the fuel tank. The two horizontally opposed pressure ends respectively extend into the experimental chamber through the first through-hole and the second through-hole. The two horizontally opposed pressure ends can approach or move away from each other in the horizontal direction to increase or decrease the horizontal pressure applied to the rock sample in the experimental chamber. The vertical pressure component is located above the fuel tank. The vertical pressure component has a vertical pressure end, and the vertical pressure end can move in the vertical direction to increase or decrease the vertical pressure applied to the rock sample in the experimental chamber.

[0010] In some embodiments, there are two horizontal pressure components and two vertical pressure components respectively. One of the oppositely arranged first through-hole and one second through-hole form a hole group, and there are two such hole groups. The two horizontal pressure components are respectively a first horizontal pressure component and a second horizontal pressure component. The two horizontally opposed pressure ends of the first horizontal pressure component respectively extend into the fuel tank through the first through-hole and the second through-hole of one hole group. The two horizontally opposed pressure ends of the second horizontal pressure component respectively extend into the fuel tank through the first through-hole and the second through-hole of the other hole group. The two horizontally opposed pressure ends of the first horizontal pressure component are oppositely arranged in a first direction. The two pressure ends of the second horizontal pressure component are oppositely arranged in a second direction. The first direction is not parallel to the second direction. The two vertical pressure components are both located above the fuel tank.

[0011] In some embodiments, the support module includes: a gantry and a bottom support member. Both the bottom support member and the gantry are configured to be disposed on a support. The gantry has a support section located above the accommodation module, and the simulation module is disposed on the support section.

[0012] In some embodiments, the simulation module includes a lifting drive member and a drilling drive member. The support module further includes: a slide rail vertically disposed. One end of the slide rail is fixedly connected to the support section, and the other end is suspended. The drilling drive member is slidably connected to the slide rail. The lifting drive member is fixedly connected to the support section, and an output end of the lifting drive member is in transmission connection with the drilling drive member. The lifting drive member is capable of driving the drilling drive member to slide along the slide rail; an output end of the drilling drive member forms an output end of the simulation module.

[0013] In some embodiments, the detection module includes a strain gauge and a sensing control device. The strain gauge forms a detection end. The strain gauge is configured to be fixedly connected to the outer side of the rock sample or the inner side wall of a borehole formed by the drilling of a drill tool, and the strain gauge is configured to be in signal connection with the sensing control device.

[0014] The present invention also provides a simulated drilling experiment method, including the following steps: filling the experimental cavity with oil, and immersing the rock sample in the oil;

[0015] By a power source and a heating assembly, circulating the oil in a route from the experimental cavity to the oil pipeline and then back to the experimental cavity, and heating the oil in the oil pipeline;

[0016] Applying pressure to the rock sample through a pressure module;

[0017] While driving the drill tool to rotate and move downward through the simulation module, causing the drill tool to drill into the rock sample, and detecting the stress and strain of the rock sample through the detection module.

[0018] The present invention has achieved the following technical effects compared with the prior art:

[0019] The simulated drilling experiment device provided by the present invention can inject oil into the accommodation cavity and immerse the rock sample in the oil when conducting a simulated drilling experiment. Then, the power source and the heating component are turned on to make the oil circulate along the route from the accommodation cavity to the oil pipeline and back to the accommodation cavity. When the oil passes through the oil pipeline, the heating component heats the oil, and the oil performs oil bath heating on the rock sample in the experiment cavity to simulate the real high-temperature environment underground. Then, the pressure module applies pressure to the rock sample to simulate the real high-pressure environment underground. Next, the simulation module drives the drill to rotate and move downward to drill a hole in the rock sample, and the detection module detects the stress and strain conditions of the rock sample. The staff can evaluate the rock being drilled in extreme cases based on the data obtained by the detection module, providing an important scientific basis for geological exploration and energy extraction, etc. Moreover, the device uses oil bath heating and utilizes the characteristic of oil having a high boiling point to enable the rock to reach the high temperature required for the experiment. The oil circulates along the route from the accommodation cavity to the oil pipeline and back to the accommodation cavity, and the flow of the oil makes the temperature of the oil in the accommodation cavity evenly distributed, achieving uniform heating of the rock sample, improving the accuracy of temperature control, and enhancing the reliability of the experiment.

[0020] Further, by setting two horizontal pressure components and two vertical pressure components, and making the two horizontal pressure ends of the first horizontal pressure component apply pressure to the rock sample in the first direction, and making the two horizontal pressure ends of the second horizontal pressure component apply pressure to the rock sample in the second direction, a triaxial six-direction pressure is applied to the rock sample to simulate the multi-directional high in-situ stress that the rock bears underground, ensuring uniform stress on the rock sample and improving the authenticity and reliability of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the simulated drilling experiment device in some embodiments of the present invention;

[0023] Figure 2 is Figure 1 a schematic structural diagram of the accommodation module and the pressure module in;

[0024] In the figure: 1. Support module; 11. Gantry; 12. Bottom support; 2. Accommodation module; 21. Experimental chamber; 22. Clamp; 23. Oil tank; 3. Heating module; 31. Oil suction port; 32. Oil delivery port; 33. Oil suction section; 34. Heating section; 35. Oil outlet section; 36. Power source; 37. Temperature sensor; 4. Strain gauge; 5. Simulation module; 51. Lifting drive; 52. Drilling drive; 53. Slide rail; 54. Chain; 6. Pressure module; 61. Horizontal pressure assembly; 62. Vertical pressure assembly; 63. Horizontal pressure plate; 64. Horizontal hydraulic cylinder; 65. Vertical hydraulic cylinder; 7. Rock sample; 8. Drill tool. Detailed implementation manners

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] The purpose of the present invention is to provide a simulation drilling experiment device and an experiment method to solve the problems existing in the above-mentioned prior art, which can improve the authenticity of simulation data and enable the rock sample to be evenly heated.

[0027] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0028] Embodiment 1

[0029] This embodiment provides a simulation drilling experiment device, as Figure 1-2As shown in the figure, it includes: a support module 1, a containment module 2, a heating module 3, a pressure module 6, a detection module, and a simulation module 5. The containment module 2, the pressure module 6, and the simulation module 5 are all connected to the support module 1. The containment module 2 has an experimental chamber 21 with an open top, and the experimental chamber 21 is used to set the rock sample 7. The pressure module 6 can apply pressure to the rock sample 7 in the experimental chamber 21. The simulation module 5 is located above the experimental chamber 21. The simulation module 5 has an output end, and the output end can move in the vertical direction. The output end is used to connect the drilling tool 8, and the output end can also rotate around a vertical axis and drive the drilling tool 8 to rotate. The heating module 3 includes: an oil pipeline, a power source 36, and a heating component. The oil pipeline has an oil suction port 31 and an oil delivery port 32. Both the oil suction port 31 and the oil delivery port 32 are communicated with the experimental chamber 21. The heating component is connected to the oil pipeline and can heat the oil in the oil pipeline. The power source 36 can suck the oil in the experimental chamber 21 from the oil suction port 31, and make the oil flow through the oil pipeline and then discharge it from the oil delivery port 32 to the experimental chamber 21. The detection module can detect the magnitudes of the stress and strain of the rock sample 7.

[0030] For the simulation drilling experiment device provided by the present invention, during the simulation drilling experiment, oil can be injected into the containment chamber, and the rock sample 7 can be immersed in the oil. Then, the power source 36 and the heating component are turned on, so that the oil circulates along the route from the containment chamber to the oil pipeline and then back to the containment chamber, and the oil is heated by the heating component when passing through the oil pipeline. The oil performs oil bath heating on the rock sample 7 in the experimental chamber 21, simulating the real high-temperature environment underground. Then, the pressure module 6 applies pressure to the rock sample 7 to simulate the real high-pressure environment underground. Next, the simulation module 5 drives the drilling tool 8 to rotate and move downward to drill a hole in the rock sample 7, and the detection module detects the stress and strain conditions of the rock sample 7. The staff can evaluate the rock being drilled in extreme cases based on the data obtained by the detection module, providing an important scientific basis for geological exploration and energy exploitation, etc. Moreover, this device uses oil bath heating. Utilizing the characteristic that oil has a high boiling point, the rock can reach the high temperature required for the experiment. The oil circulates along the route from the containment chamber to the oil pipeline and then back to the containment chamber. By using the flow of the oil, the temperature of the oil in the containment chamber is evenly distributed, realizing uniform heating of the rock sample 7, improving the accuracy of temperature control, and enhancing the reliability of the experiment.

[0031] In an implementation manner of this first embodiment, the power source 36 is an oil pump, the heating component is a resistance wire, the oil pipeline includes a suction section 33, a heating section 34, and a discharge section 35. One end of the suction section 33 forms a suction port 31, and the other end is connected and communicated with the inlet port of the oil pump. One end of the heating section 34 is connected and communicated with the outlet port of the oil pump, and the other end is connected and communicated with one end of the discharge section 35. The other end of the discharge section 35 forms an oil delivery port 32, and the resistance wire is wound around the heating section 34. During the experiment, the oil pump is turned on, and the oil in the experimental chamber 21 is sucked into the suction section 33 by the oil pump from the suction port 31, and is pressurized and conveyed to the heating section 34 by the oil pump. After the resistance wire on the heating section 34 is energized, it generates heat to increase the oil temperature; then the high-temperature oil flows out of the heating section 34, flows through the discharge section 35, and returns to the experimental chamber 21 through the oil delivery port 32.

[0032] In an implementation manner of this first embodiment, a temperature sensor 37 is provided on the oil pipeline. The temperature sensor 37 can detect the temperature inside the oil inlet pipeline. The temperature sensor 37 can accurately detect the oil temperature. After the staff obtains the oil temperature, they can adjust the temperature of the heating wire in time and more accurately simulate the real underground temperature situation. Among them, the temperature sensor 37 is preferably arranged on the suction section 33, and can also be arranged on the heating section 34 or the discharge section 35 according to needs.

[0033] In an implementation manner of this first embodiment, the accommodating module 2 includes: an oil tank 23 and a holder 22. The top of the oil tank 23 has an opening, and the space inside the oil tank 23 forms an experimental chamber 21. The holder 22 is arranged inside the oil tank 23, and the holder 22 can fix the rock sample 7. The holder 22 can stably fix the rock sample 7 and prevent the rock sample 7 from moving during the oil circulation or pressurization process.

[0034] In an implementation manner of this first embodiment, the pressure module 6 includes a horizontal pressure assembly 61 and a vertical pressure assembly 62 fixedly connected to the support module 1. The horizontal pressure assembly 61 has two relatively arranged horizontal pressure ends. A first through hole and a second through hole are relatively arranged on the side wall of the oil tank 23. The two horizontal pressure ends respectively extend into the experimental chamber 21 through the first through hole and the second through hole. The two horizontal pressure ends can relatively approach or move away from each other in the horizontal direction to increase or decrease the horizontal pressure received by the rock sample 7 in the experimental chamber 21. The vertical pressure assembly 62 is located above the oil tank 23. The vertical pressure assembly 62 has a vertical pressure end, and the vertical pressure end can move in the vertical direction to increase or decrease the vertical pressure received by the rock sample 7 in the experimental chamber 21. The two horizontal pressure ends of the horizontal pressure assembly 61 can respectively enter the oil tank 23 through the first through hole and the second through hole and apply a horizontal pressure to the rock sample 7. The vertical pressure end of the vertical pressure assembly 62 can enter the oil tank 23 through the opening at the top of the oil tank 23 and apply a vertical pressure to the rock sample 7, truly simulating the high-stress environment of deep rocks.

[0035] In an implementation manner of this first embodiment, two horizontal pressure components 61 and two vertical pressure components 62 are respectively provided. A first through-hole and a second through-hole that are oppositely arranged form a hole group, and two hole groups are provided. The two horizontal pressure components 61 are respectively a first horizontal pressure component 61 and a second horizontal pressure component 61. The two horizontal pressure ends of the first horizontal pressure component 61 respectively extend into the fuel tank 23 through the first through-hole and the second through-hole of one hole group, and the two horizontal pressure ends of the second horizontal pressure component 61 respectively extend into the fuel tank 23 through the first through-hole and the second through-hole of the other hole group. The two horizontal pressure ends of the first horizontal pressure component 61 are oppositely arranged in a first direction, and the two pressure ends of the second horizontal pressure component 61 are oppositely arranged in a second direction. The first direction and the second direction are not parallel. The two vertical pressure components 62 are both located above the fuel tank 23. By providing two horizontal pressure components 61 and two vertical pressure components 62, and applying pressure to the rock sample 7 in the first direction by the two horizontal pressure ends of the first horizontal pressure component 61 and applying pressure to the rock sample 7 in the second direction by the two horizontal pressure ends of the second horizontal pressure component 61, a triaxial six-direction pressure is applied to the rock sample 7, simulating the multi-directional high in-situ stress that the rock bears underground, ensuring that the rock sample 7 is uniformly stressed, and improving the authenticity and reliability of the experiment. Among them, the first direction and the second direction are preferably perpendicular to each other.

[0036] Specifically, each horizontal pressure component 61 includes two horizontal hydraulic cylinders 64. The cylinder body of the horizontal hydraulic cylinder 64 is fixedly connected to the support module 1. The piston rod of the horizontal hydraulic cylinder 64 extends into the experimental chamber 21 through the first through-hole or the second through-hole. The end of the piston rod is fixedly connected with a horizontal pressing plate 63, and the horizontal pressing plate 63 forms a horizontal pressure end; the vertical pressure component 62 includes a vertical hydraulic cylinder 65. The cylinder body of the vertical hydraulic cylinder 65 is fixedly connected to the support module 1 and is located above the opening of the fuel tank 23. The end of the piston rod of the vertical hydraulic cylinder 65 is fixedly connected with a vertical pressing plate, and the vertical pressing plate forms a vertical pressure end; in addition, in order to avoid oil leakage, taking the horizontal hydraulic cylinder 64 as an example, a sealing structure (such as a sealing plate, a sealing sheet, etc., and the sealing structure needs to be provided with holes for the piston rod to pass through) can be provided between the cylinder body of the horizontal hydraulic cylinder 64 and the fuel tank 23 to seal the gap between the piston rod and the first through-hole (or the second through-hole).

[0037] In an implementation manner of this first embodiment, the support module 1 includes: a gantry 11 and a bottom support 12. The accommodation module 2 and the pressure module 6 are both arranged on the bottom support 12. The gantry 11 has a support section located above the accommodation module 2, and the simulation module 5 is arranged on the support section. Both the bottom support 12 and the gantry 11 are used to be arranged on a support and stably support the accommodation module 2, the pressure module 6, and the simulation module 5, improving the stability of the device.

[0038] In an implementation manner of this first embodiment, the simulation module 5 includes a lifting drive 51 and a drilling drive 52. The support module 1 further includes: a slide rail 53 which is vertically arranged. One end of the slide rail 53 is fixedly connected to the support section, and the other end is suspended. The drilling drive 52 is slidably connected to the slide rail 53. The lifting drive 51 is fixedly connected to the support section, and the output end of the lifting drive 51 is in transmission connection with the drilling drive 52. The lifting drive 51 can drive the drilling drive 52 to slide along the slide rail 53; the output end of the drilling drive 52 forms the output end of the simulation module 5. During the experiment, a drill tool 8 can be connected to the output end of the drilling drive device, and the drilling drive device can be controlled to descend along the slide rail 53 through the output end of the lifting drive device. The drilling drive device simultaneously drives the drill tool 8 to rotate, accurately simulating the actual drilling process and providing more reliable data for studying the physical properties of rocks. Among them, the output end of the lifting drive 51 and the drilling drive device are in transmission connection through a chain 54, and can also be realized through various transmission methods such as gear transmission and belt transmission.

[0039] In an implementation manner of this first embodiment, the detection module includes a strain gauge 4 and a sensing control device. The strain gauge 4 forms a detection end. The strain gauge 4 is used to be fixedly connected to the outer side of the rock sample 7 or the inner side wall of the borehole formed by the drill tool 8 during drilling. The strain gauge 4 is used to be in signal connection with the sensing control device. The strain gauge 4 can detect the strain of the rock sample 7 and transmit it to the sensing control device. The sensing control device can obtain the stress and strain of the rock sample 7 according to the data obtained by the strain gauge 4. Among them, during the experiment, the following method can be adopted for stress-strain measurement: First, paste the strain gauge 4 on the outer side of the rock sample 7, drill a hole in the rock sample 7 through the drill tool 8, then lift the drill, and paste the strain gauge 4 on the inner side wall of the borehole to detect the stress and strain of the rock borehole wall, so as to comprehensively detect the mechanical properties of the rock and improve the reliability of the experimental results.

[0040] Second Embodiment

[0041] This embodiment provides a simulated drilling experiment method, which includes the following steps: filling the experimental cavity 21 with oil and immersing the rock sample 7 in the oil; circulating the oil in a route from the experimental cavity 21 to the oil pipeline and then back to the experimental cavity 21 through the power source 36 and the heating component, and heating the oil in the oil pipeline; applying pressure to the rock sample 7 through the pressure module 6; driving the drill 8 to rotate and move downward simultaneously through the simulation module 5, so that the drill 8 drills into the rock sample 7, and detecting the stress and strain of the rock sample 7 through the detection module.

[0042] The simulated drilling experiment method provided in this embodiment is completed by using the simulated drilling experiment device in Embodiment 1, which can simulate the real high-temperature and high-pressure environment underground, and accurately control the temperature at the same time, so that the rock sample 7 can be uniformly heated.

[0043] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A simulated drilling experimental device, characterized in that: include: A support module, a receiving module, a heating module, a pressure module, a detection module and a simulation module, wherein the receiving module, the pressure module and the simulation module are all connected to the support module; the receiving module has an experimental cavity with an opening at the top, wherein the experimental cavity is used to set a rock sample; the pressure module can apply pressure to the rock sample in the experimental cavity; the simulation module is located above the experimental cavity, and the simulation module has an output end, wherein the output end can move in a vertical direction, the output end is used to connect a drilling tool, and the output end can also rotate around a vertical axis and drive the drilling tool to rotate; the heating module comprises: an oil pipeline, a power source and a heating component, wherein the oil pipeline has an oil suction port and an oil delivery port, wherein the oil suction port and the oil delivery port are both connected to the experimental cavity, the heating component is connected to the oil pipeline and can heat the oil in the oil pipeline, and the power source can suck the oil in the experimental cavity from the oil suction port, and discharge the oil from the oil delivery port to the experimental cavity after the oil flows through the oil pipeline; The detection module can detect the magnitude of stress and strain of the rock sample.

2. The simulated drilling experimental device according to claim 1, characterized in that: The power source is an oil pump, the heating component is a resistance wire, the oil pipeline includes an oil suction section, a heating section and an oil outlet section, one end of the oil suction section forms the oil suction port, and the other end is connected and communicated with the oil inlet of the oil pump, one end of the heating section is connected and communicated with the oil outlet of the oil pump, and the other end is connected and communicated with one end of the oil outlet section, the other end of the oil outlet section forms the oil delivery port, and the resistance wire is wound around the heating section.

3. The simulated drilling experimental device according to claim 2, characterized in that: The oil pipeline is provided with a temperature sensor, and the temperature sensor can detect the temperature in the oil inlet pipeline.

4. The simulated drilling experimental device according to claim 1, characterized in that: The containing module comprises: an oil tank and a clamp, the top of the oil tank is provided with an opening, the space inside the oil tank forms the experimental cavity, the clamp is arranged inside the oil tank, and the clamp can fix the rock sample.

5. The simulated drilling experimental device according to claim 4, characterized in that: The pressure module includes a horizontal pressure component and a vertical pressure component fixedly connected to the support module, the horizontal pressure component has two horizontal pressure ends arranged opposite to each other, a first through hole and a second through hole are arranged opposite to each other on the side wall of the oil tank, the two horizontal pressure ends extend into the experimental cavity through the first through hole and the second through hole respectively, the two horizontal pressure ends can be relatively close to or far away in the horizontal direction to increase or reduce the horizontal pressure exerted on the rock sample in the experimental cavity, the vertical pressure component is located above the oil tank, the vertical pressure component has a vertical pressure end, and the vertical pressure end can move in the vertical direction to increase or reduce the vertical pressure exerted on the rock sample in the experimental cavity.

6. The simulated drilling experimental device according to claim 5, characterized in that: The horizontal pressure components and the vertical pressure components are each provided with two, and a first through hole and a second through hole arranged opposite to each other form a hole group. The hole groups are provided with two, and the two horizontal pressure components are respectively the first horizontal pressure component and the second horizontal pressure component. The two horizontal pressure ends of the first horizontal pressure component extend into the oil tank through the first through hole and the second through hole of one hole group respectively, and the two horizontal pressure ends of the second horizontal pressure component extend into the oil tank through the first through hole and the second through hole of the other hole group respectively. The two horizontal pressure ends of the first horizontal pressure component are relatively arranged in a first direction, and the two pressure ends of the second horizontal pressure component are relatively arranged in a second direction. The first direction is not parallel to the second direction, and the two vertical pressure components are both located above the oil tank.

7. The simulated drilling experimental device according to claim 1, characterized in that: The support module comprises: a gantry and a bottom support member, wherein the bottom support member and the gantry are both used to be arranged on a support object, the gantry has a support section, the support section is located above the accommodating module, and the simulation module is arranged on the support section.

8. The simulated drilling experimental device according to claim 7, characterized in that: The simulation module includes a lifting drive and a drilling drive, and the support module also includes: a slide rail, which is vertically arranged, one end of which is fixedly connected to the support section, and the other end is suspended, the drilling drive is slidably connected to the slide rail, the lifting drive is fixedly connected to the support section, the output end of the lifting drive is transmission-connected to the drilling drive, and the lifting drive can drive the drilling drive to slide along the slide rail; the output end of the drilling drive forms the output end of the simulation module.

9. The simulated drilling experimental device according to claim 1, characterized in that: The detection module includes a strain gauge and a sensor control device. The strain gauge forms a detection end. The strain gauge is used to be fixedly connected to the outer side of the rock sample or the inner wall of the borehole formed by drilling with a drill. The strain gauge is used to connect the signal with the sensor control device.

10. A simulated drilling experimental method, characterized in that: The following steps are involved: Fill the experimental chamber with oil and immerse the rock sample in the oil; The oil is circulated from the test chamber to the oil pipeline to the test chamber through the power source and the heating component, and the oil is heated in the oil pipeline; Applying pressure to the rock sample through a pressure module; The simulation module drives the drill to rotate and move downward at the same time, so that the drill can drill into the rock sample, and the detection module detects the stress and strain of the rock sample.

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